/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package ru.miit.elearning.servlets;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
import ru.miit.elearning.hibernate.dao.HibernateUtil;
import ru.miit.elearning.hibernate.dao.MessageDAO;

/**
 *
 * @author gAmUssA
 */
public class AddMessageServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
//        PrintWriter out = response.getWriter();
//
//        if (true) {
//            out.println("Приносим свои извинения. Сервис временно недоступен.");
//            return;
//        }
        Session session = null;
        try {
            String content = request.getParameter("content");
            if (content != null && content.length() > 0) {

                session = HibernateUtil.getSessionFactory().getCurrentSession();
                session.beginTransaction();

                MessageDAO messageDAO = new MessageDAO(session);

                int idSender = messageDAO.findUserIdByLogin(request.getRemoteUser());
                int idRecipient = Integer.parseInt(request.getParameter("idRecipient"));

                String subject = request.getParameter("subject");
                if (subject == null || subject.length() == 0) {
                    subject = "Без темы";
                }

                messageDAO.addMessage(idSender, idRecipient, subject, content);

                if (session != null && session.isOpen()) {
                    session.getTransaction().commit();
                }
                getServletContext().setAttribute("message", "Сообщение \"" + subject + "\" отправлено");
            } else {
                if (session != null && session.isOpen()) {
                    session.getTransaction().rollback();
                }
                getServletContext().setAttribute("message", "Сообщение не отправлено");
            }
            response.sendRedirect("Messages");


        } catch (Exception e) {
            if (session != null && session.isOpen()) {
                session.getTransaction().rollback();
            }
            e.printStackTrace();
            getServletContext().setAttribute("message", "Произошла ошибка отправки сообщения");
            response.sendRedirect("Messages");
        } finally {
            if (session != null && session.isOpen()) {
                session.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
